iOS CLLocationManager定位
在iOS8以前的版本中,我们使用CLLocationManager定位是没有问题的,最近在iOS8系统中却无法定位了。。。。这是一大问题啊!
1、首先定义一个全局的变量用来记录CLLocationManager对象,引入CoreLocation.framework使用#import <CoreLocation/CoreLocation.h>
@property (nonatomic, strong) CLLocationManager *locationManager;
2、初始化CLLocationManager并开始定位
locationManager=[[CLLocationManager alloc] init]; locationManager.delegate=self; locationManager.desiredAccuracy=kCLLocationAccuracyBest; locationManager.distanceFilter=10; [locationManager startUpdatingLocation];//开启定位
3、实现CLLocationManagerDelegate的代理方法
#pragma mark CLLocationManagerDelegate
/**
* 获取经纬度
*/ -(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{ CLLocation *currLocation=[locations lastObject]; location.strLatitude=[NSString stringWithFormat:@"%f",currLocation.coordinate.latitude]; location.strLongitude=[NSString stringWithFormat:@"%f",currLocation.coordinate.longitude]; NSLog(@"la---%f, lo---%f",currLocation.coordinate.latitude,currLocation.coordinate.longitude);
CLLocation *location=[[CLLocation alloc] initWithLatitude:currLocation.coordinate.latitude longitude:currLocation.coordinate.longitude];
CLGeocoder *getCoder=[[CLGeocoder alloc]init];
static NSString *strCity=@"";
[getCoder reverseGeocodeLocation:location completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
if (error) {
NSLog(@"error: %@",error.description);
}
else{
// NSLog(@"placemarks count %lu",placemarks.count);
_lalAddress=[[UILabel alloc]initWithFrame:CGRectMake(100, HEIGHT-100, WIDTH-200, 30)];
[_lalAddress setTextAlignment:NSTextAlignmentCenter];
[_lalAddress setTextColor:[UIColor whiteColor]];
[_lalAddress setBackgroundColor:[UIColor blackColor]];
[_lalAddress setAlpha:0.8f];
// [self.window.rootViewController.view addSubview:_lalAddress];
for (CLPlacemark *placeMark in placemarks)
{
// NSLog(@"地址name:%@ ",placeMark.name);
// NSLog(@"地址thoroughfare:%@",placeMark.thoroughfare);
// NSLog(@"地址subThoroughfare:%@",placeMark.subThoroughfare);
// NSLog(@"地址locality:%@",placeMark.locality);
// NSLog(@"地址subLocality:%@",placeMark.subLocality);
// NSLog(@"地址administrativeArea:%@",placeMark.administrativeArea);
// NSLog(@"地址subAdministrativeArea:%@",placeMark.subAdministrativeArea);
// NSLog(@"地址postalCode:%@",placeMark.postalCode);
// NSLog(@"地址ISOcountryCode:%@",placeMark.ISOcountryCode);
// NSLog(@"地址country:%@",placeMark.country);
// NSLog(@"地址inlandWater:%@",placeMark.inlandWater);
// NSLog(@"地址ocean:%@",placeMark.ocean);
// NSLog(@"地址areasOfInterest:%@",placeMark.areasOfInterest);
strCity=placeMark.administrativeArea;
}
}
}];
} /** *定位失败,回调此方法 */ -(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{ if ([error code]==kCLErrorDenied) { NSLog(@"访问被拒绝"); } if ([error code]==kCLErrorLocationUnknown) { NSLog(@"无法获取位置信息"); } }
iOS8中使用CoreLocation定位
1、在使用CoreLocation前需要调用如下函数【iOS8专用】:
iOS8对定位进行了一些修改,其中包括定位授权的方法,CLLocationManager增加了下面的两个方法:
(1)始终允许访问位置信息
- (void)requestAlwaysAuthorization;
(2)使用应用程序期间允许访问位置数据
- (void)requestWhenInUseAuthorization;
示例如下:
locationManager=[[CLLocationManager alloc] init]; locationManager.delegate=self; locationManager.desiredAccuracy=kCLLocationAccuracyBest; locationManager.distanceFilter=10; if (iOSVersion>=8) { [locationManager requestWhenInUseAuthorization];//使用程序其间允许访问位置数据(iOS8定位需要) } [locationManager startUpdatingLocation];//开启定位
2、在Info.plist文件中添加如下配置:
(1)NSLocationAlwaysUsageDescription
(2)NSLocationWhenInUseUsageDescription
![](//images0.cnblogs.com/blog/603490/201501/081834376253461.png)
这样添加后,定位功能就能正常使用了!